My parents are illegal immigrants. Can I study abroad?

You must not make false information. Many students in China were sent back to China because of false information. If you tell the truth about your parents, it will definitely affect your application. As for whether they can understand, it's hard to say, because they may suspect that you will have the idea of staying there, so you have to convince them sincerely, and it's not clear whether they will agree. I know a friend whose mother does business in America. He used to want to study abroad, but his application was rejected three times. Another is not to study in the United States and Canada, but to visit parents in the United States during holidays.